Improvement in piston connections



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Letters Patent No. 102,703, dreamy 3, 1870.

IMPRQV-EMENT IN PISTON CONNECTIONS.

Th'.- Scheule referred to'in'these Letters Patent and`making paxt of the same.

To all whom it may concern Be it known that I, vHART F. PEASE, 'of Brooklyn, inthe county of Kings and State o'f New York, have invented a new and useful Improvement in Piston Connections, of which the following is afull, clear, and exact description, reference being had to the accompanyingv drawing forming part lofthis specification, and which represents a' sectional view of my improved pis ton connectiontaken in direction ofthe length of the rod.

Vbile generally applicable to engines and pumps of various kinds, it isV more particularly myV intention to apply the improved pistou connection I ,aml about to describe to the engine invented by Henry Bailey, vas patented March 9, 1867, also January 21, 1868.

It is not necessary here, however, to describe it, other than as a piston connection .in which the rod is required to have vibratory playas it is reciprocated, in order to accommodate itself to the various angles assumed by,l the crank. u

My invention consists in a certainmeans for .effecting the-adjustment of a balland-socket connection of' the rod with its piston.

Referring to the accompanying drawing- A. represents the piston,lwl1ich is of a hollow cylindrical construction on its inside, to receive within it half boxes B B of like contour to the interior of the piston, and fitted so as to be capableA of sliding and turning within the same, the axial lines of said half boxes being coincident with that ofthe piston. f

These half boxes B B are of cupped congurat-ion internally, so as to form sockets for a ball, C, or spherical termination to the inner end .ofthe piston-rod-D, that thus establishes a universal-joint connection with. the piston at or'about the middle of its length.

The front half box B, may butt up against the forward end of the piston, and is formed with a free opening, la, through it, mainly of oblong character, to pro-V j vide for theea'sy play and vibratory mot-ion of the rod D through it iu its connection with the crank, the for- Ward end of the piston having a similar opening, b', through it-for the like purpose.l

lThe other or rear halt` box B', is made adj ustablc in direction of its length to provide for wear of the balland-socket joint or piston connection. This is effected by means of a set-screw, d, fitted into or through the follower c, as by such arrangement the same may be got at, and the necessary adjustment effected by or through a small bonnet fitted intothe end of the cylinder, fwhich prevents the taking ofi' of the cover to the latter for the purpose. n A I -By thc central arrangement of the ball-aud-sockct joint, relatively both to the length. and diameter ofthe piston-and freedom of the halt' boxes to turn within the' latter, there is not merely a most perfect unirersal self-adjustment secured for the piston-rod, to accommodate itself alike to the motion of the crank, and to meet any lateral, twisting, or irregular play ot' or strain on said rod, but the stress upon the piston coming at its center, both longitudinally and diametrically does away with or reduces racking and objectionable tipping of the piston within its cylinder. A piston connection thusestablished, materially aids the free run of the engine, and conduces to its economy and durability. g

The half boxes or sockets may be suitably grooved, to provide for the lubrication of the joint by the steam or fluid passing through the openings b through' which the piston-rod plays.. v

I do notclaim a ballandsocket connection of the pitman with the piston per se, as that has been done ina diii'erent manner, and differently arranged from mine, but v `What I claim as new,and desire to secure by Let ters Patent, is

The adjustment ofthe cylindrical half sockets B B within the piston A by means of the set-screw d, as herein 'shown and described. i HART F. PEASE.

XVitnesses VJOHN D. Rossm', HENRY PALMER. 

